package No1_100.No11_20.LetterCombinationsofaPhoneNumber_17;

import java.util.List;

public class Solution {
	
	public static List<String> letterCombinations(String digits) {
		String[][] input = {{},{},{"a","b","c"},{"d","e","f"},{"g","h","i"},{"j","k","l"},{"m","n","o"},
				{"p","q","r","s"},{"t","u","v"},{"w","x","y","z"}};
		int resLength = 1;
        for (int i = 0; i < digits.length(); i++) {
			int temp = Integer.valueOf(digits.substring(i, i+1));
			resLength = resLength*input[temp].length;
		}
		
		return null;
    }
	
	public static void main(String[] args) {
		letterCombinations("23");
	}
}
